How to get row and column length of a 2-dimensional array in rails 3? -

How can one get a 2-dimensional array in row 3 and the length of the column?

My array goes like this:

  payroll = array.new [payroll count] [2]   
 When we are the length of a 1-dimensional array we do  
 array.length  How about a 2-dimensional array? 
 I am thinking of doing something like this:  
  payroll = array.new [payroll count] [2] i in 0..payroll.row.length - 1 for j In 0. .. $ payroll [i] [j] end end   
 I just want to know the right way. Pls help ...  
 
 A two-dimensional array is just an array of arrays, so only  Payroll length  to get the height and  salary [0]. To get width (length of all rows), to get the length  width. It is that your loop looks like using the idea:  
  i for 0..payroll.length - 1 in 0 for jar .. parole [i]. Length - 1 puts a payroll [i] [j] end end   
 But an easy way to loop through the array is using an iterator method. Here I'll change the  for  loops to  each .with_index  (use  every_with_index  if your ruby ​​ each .with_index ) :  
  payroll.each.with_index do | Line, i | Do Row.each.with_index | Cell, J. Say payroll [i] [j] end end   
 And now I make it even simpler because I'm assuming that you do not really need access to the indexes, just array Personal elements in:  
  payroll.each do | Row | Line.Hold | Room | Puts cell end and